978-1-4222-3418-1

Scientists who study the motion of planets and the moon had to show how those rockets should be launched to end up back on Earth. When NASA aimed at a moon landing, astronomers had to find where the moon would be—exactly—so that the launch times would be made at just the right moments. Even meteorologists, people who study weather, were part of the space flight team. They had to make sure that the skies would be clear for safe launches. Several times, their predictions of storms kept astronauts from blasting off into lightning. Science has long been a vital part of the entire space program.With the addition of scientists into the astronaut corps, that work blasted off. People who had studied physics, engineering, biology, and other sciences found that their skills were needed off-planet. A big reason for this need was the idea that humans would be liv- ing in space a lot in the future. How would that affect them and their bodies? Scientists became living labs as they worked on this problem. Medical doctors were part of some missions, so they could study how the other astronauts reacted to life in space. Biologists who study living things watched as plants and insects grew in space. Knowing how to grow crops for food during future space missions might be very valu- able. Future astronauts might be able to grow their own food while they travel to distant lands. The study of weather is called meteorology . Experts in that science can spin above the Earth and study weather patterns, winds, storms, and hurricanes. Chemistry experts did experiments to watch how compounds and elements reacted to space conditions.Would they react as they do on on Earth? Or would the lack of gravity affect how they mixed or reacted?

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